• Proceedings of the KACD Conference
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• 2001.11a
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• pp.574.2-574
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• 2001

The objective of this study was to evaluate the effect of EDTA irrigant depending on application times and temperatures. 31 human mature extracted teeth with a single canal and a closed apex were sectioned with microtome in 3mm thickness. They were distributed randomly into 6 groups of 10 specimens each and control group of 2 specimens. Each specimen was prepared with $GT^{TM}$ rotary file (Dentsply, Maillefer Co., Swiss) and irrigated with 3ml sodium hypochlorite every minute. Then smear layer wasn removed with EDTA solution ($PULPDENT^{\circledR}$, PULPDENT Co., USA.) except two control specimens. Specimens of each group were irrigated with 17％ EDTA.(omitted)

• Journal of Welding and Joining
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• v.19 no.3
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• pp.267-273
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• 2001

In this study, welding phenomena involved in formation of penetrators during high frequency electric resistance welding were investigated. High speed cinematography of the process revealer that a molten bridge between neighboring skelp edges forms at apex point and travels along narrow gap toward to welding point at a speed ranging from 100 to 400 m/min. The bridge while moving along the narrow gap swept away oxide containing molten metal from the gap, providing oxide-free surface for a forge-welding at upsetting stand frequency of the budge formation, travel distance and speed of the bridge were affected by the heat input rate into strip. The travel distance and its standard deviation were found to have a strong relationship with the weld defect density. Based on the observation, a new mechanism of the penetrator formation during HF ERW process is proposed.

• Journal of Chest Surgery
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• v.25 no.12
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• pp.1471-1475
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• 1992

Within the group of congenital cardiac anomalies manifesting atrioventricular discordance, there exists a subset of hearts characterized by the additional presence of double outlet of the morphological right ventricle. Most of these hearts have associated pulmonary stenosis and abnormal direction of the cardiac apex, and all have a ventricular septal defect. Recently, a 10-year old boy underwent successful surgical correction of double outlet right ventricle with atrioventricular discordance. Diagnostic confirmation was made by 2-D echocardiography, cardiac catheterization and cineangiocardiography. The operation consisted of patch closure of ventricular septal defect so as to leave both great arteries draining the systemic[morphologically right] ventricle, and insertion of an extracardiac valved conduit between the morphological left ventricle and the distal end of the proximally oversewn pulmonary artery. Postoperative course was uneventful.

• Korean Journal Plant Pathology
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• v.10 no.2
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• pp.148-150
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• 1994

Anthracnose of statice (Limonium sp. var. Misty Blue and L. sinuatum Mill. cv. Early Blue) occurred up to 20% in vinyl-houses at Buan, Imsil and Namwon from July to November, 1993. All isolates from the anthracnose symptoms were identified as Glomerella cingulata (Stonem.) Spauld. & Schrenk and its anamorph was Colletotrichum gloeosporioides (Pens.) Sacc. Pathogenicity of the isolates was ascertained on the statice host by artificial inoculation. The symptoms on leaves appeared as circular brown spots in early stage and developed to zonate spots. The spot aggregated and diseased leaves were blighted. The symptom also developed on the stems of severely infected plants and the infected branches were blighted. A lots of acervuli developed on the lesions of stems. Acervuli on necrotic lesions were setose, rounded and elongated. Setae variable in length, 1~4 septate, brown, slightly swollen at the base and tapered to the apex on which conidia were occasionally borned. Statice was revealed as the new host of G. cingulata.

• Animal Systematics, Evolution and Diversity
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• v.32 no.2
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• pp.86-92
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• 2016

A new species of Telestacicola Humes and Stock, 1972 (Copepoda, Rhynchomolgidae) is described as an associate of basket stars (Ophiuroidea) from Korea. The new species Telestacicola turgipes closely resembles T. angoti Humes and Stock, 1973, but is differentiated from the latter species and other congeners by a characteristic exopod of female leg 5 in which the middle of inner margin is protruded, with an angular apex. Doridicola connexus Humes, 1986 and D. micropus Humes, 1973, both associated with a basket star, are transferred to the genus Telestacicola, while Telestacicola sertus Humes, 1978 associated with a hydroid is removed to the genus Pseudomacrochiron Reddiah, 1969 in the Macrochironidae. A key to seven species of Telestacicola is provided.

• Journal of the Korean Society of Visualization
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• v.13 no.2
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• pp.28-32
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• 2015

Blood flow simulations in an realistic carotid bifurcation model with considering wall compliance were carried out to investigate the effect of wall elasticity on the wall shear stress and wall solid stress. Canonical waveforms of flow rates and pressure in carotid arteries were imposed for boundary conditions. Compared to a rigid wall model, we found an increased recirculation region at the carotid bulb and an overall reduction of wall shear stress in a compliant model. Additionally, there was appreciable change of flow rate and pressure wave in longitudinal direction. Both solid and wall shear stress concentration occur at the bifurcation apex.

• Journal of Chest Surgery
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• v.16 no.4
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• pp.470-475
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• 1983

Myxoma of the heart can now be successfully treated but the success is obviously dependent upon the correct diagnosis and treatment prior to development of catastrophic complications such as sudden death, embolism or cardiac failure. The right ventricular myxoma is very rare, and we treated successfully a case of giant right ventricular myxoma, sessile tumor originated from ventricular apex, weighed 175 gm. The tumor base was broad, about 3 cm x 3cm, and it was hardly adhesed to the tricuspid valvular structures, but could remove with the preservation of adequate residual ventricular chamber size and the maintenance of functional tricuspid valve anatomy. The postoperative course was excellent and uneventful.

• Journal of Chest Surgery
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• v.16 no.4
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• pp.526-532
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• 1983

This is a report of one case of Loffler`s eosinophilic endocarditis associated with mitral insufficiency and LV thrombi treated surgically at the department of Thoracic and Cardiovascular Surgery, Hanyang University Hospital. This patient was a 42 year old female and she has complains of dyspnea, palpitation, orthopnea and generalized edema. Above symptoms has been going for 4 months and NYHA classification was IV. On examination, blood eosinophil was 45 to 50% [WBC-9800 ]. MI and LV thrombi were confirmed by LV ventriculography and echocardiography. Pulmonary congestion and congestive cardiac failure were diagnosis by X-Ray examination, EKG finding and clinical feature and others there were no organic functional disturbance. Mitral valve replacement was performed with Ionescu-Shiley pericardial valve [29mm] replacement. Adjust thumb sized grayish brown colored two thrombi were excluded, lodged in the apex and septal endocardium of LV. Endocardial fibrosis was reliably confirmed under the gross pathology in the heart. The patient had smooth postoperative course and there were no operative complication.

• Journal of Chest Surgery
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• v.4 no.1
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• pp.51-54
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• 1971

37 years old female was admitted with chief complaints of dyspnea on exertion and hemoptysis. Past history and family history were non-contributory. Physical examination showed Grade III systolic murmur at the apex, which transmitted to the back. E. K. G. and X-ray findings were compatible with the mitral insufficiency. With small size of Beall mitral valve, mitral valve replacement was done under the cardia-pulmonary bypass using hemodilution technic. Patient was tracheotomized after operation and assisted respiration was done for four weeks. Postoperatively, all signs were fine and patient walked around the ward without any difficulty, but she was in psychotic state. On postoperative 60th day, she complained of sudden dyspnea and on chest film, tracheal stenosis was found and recannulation of the tracheal tube was made. Thereafter, she was quite fine until postoperative 110th day when she, by berself, removed the tracheal cannula and died of asphyxia. Autopsy findings of the valve showed no thrombosis, no variance of the valve, and good endothelization of the valve cuffs. Asphyxia, due to removal of the tracheal connula by herself under psychotic state, was considered to be the cause of death in this patient who had tracheal stenosis after tracheostomy.

• Journal of Chest Surgery
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• v.29 no.5
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• pp.559-563
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• 1996

We have experienced a patient, 16 year-old male, with ventricular septal defect with tricuspid recur- gitation due to blunt chest trauma. He suffered from congestive heart failure after the trauma. Echocardiogram and cardiac catheterization revealed left to right shunt at the ventricular level (muscu- far portion of interventricular septum) and tricuspid regurgitation. At the time of the operation, marked systolic thrill was palpable over the rlght ventricle near the apex and a chorda tendina was seen sharply ruptured just near the medial papillary muscle. We repaired the ventricular septal defect with a Dacron patch and chordal reconstruction with autologous pericardium. The postoperative course was uneventful and the patient was discharged in good condition.